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(Black plate)
Name ___________________________________________________________________
Date ____________
Class ______________
Take a simple cube.
1
Work out it's
surface area
Work out it's
volume
Compare them.
(Times bigger, ratio)
1m
Double
the size
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Triple
the size
Quadruple
the size
5 times
the size
6 times
the size
BIOLOGY: The Dynamics of Life CHAPTER 11
41
What do we notice?
What happens at the surface of cells, the membrane?
Now bigger cells need more ............................................... and have to
get rid of more ......................
Why can't cells get to big?
What would happen to organlles in the middle of really big cells?